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Finding the Fourth Proportional to 353,638.80, 530,586.09 and 218,544.75

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Solution

The fourth proportional to 353,638.80, 530,586.09 and 218,544.75 is: 327,896.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,638.80 : 530,586.09 = 218,544.75 : x
  2. Step 2: Convert to fraction form
    353,638.80/530,586.09 = 218,544.75/x
  3. Step 3: Cross multiply
    353,638.80x = 530,586.09 × 218,544.75
  4. Step 4: Simplify right side
    353,638.80x = 115,956,804,392.53
  5. Step 5: Solve for x
    x = 115,956,804,392.53/353,638.80
  6. Step 6: Final answer
    x = 327,896.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.